TWI433131B - Display driving device and method thereof - Google Patents

Description

Display driving device and method

The present invention relates to a display driving device and method, and more particularly to a display driving device and method capable of reducing power consumption.

In order to play a movie (Motion Picture), a general liquid crystal display will play a large number of pictures in a short time, so that the visual persistence phenomenon of the human naked eye can be used to make the viewer feel the movement of the object in the picture. The Frame Rate is a measure of how many screens a LCD monitor plays in a single time. It is usually displayed in Frames Per Second (FPS) or Hertz (Hz). The unit used by the frame rate. Generally speaking, when the frame rate is higher than 16 frames per second, the visual persistence phenomenon of the human naked eye will cause the viewer to think that an object in a large number of pictures played is continuously played, a general animated movie. The same principle is also used for fast playback. When the frame rate reaches 24 frames per second, the movement of the objects caused by the human naked eye is quite sufficient, but for some players, the human eye must have higher dynamic vision to watch the application or game. In this case, because a frame of these applications or games contains only visual information at a single point in time, a higher frame rate is required to compensate for the frame rate during playback.

The picture data update frequency (that is, a frame rate) of a conventional liquid crystal display is usually fixed, and the power consumption of the driving circuit used to drive the display panel in the liquid crystal display is also displayed in the frame. The ratio is proportional; in other words, the power consumption of the driving circuit for driving the display panel when displaying the screen is also a fixed value.

The invention discloses a display driving method and a display system, so as to achieve energy saving and image quality improvement.

The display driving method includes dividing a first picture and a second picture into a plurality of first blocks and a plurality of second blocks according to a resolution, wherein the first picture and the second picture are one For a continuously played picture, and the plurality of first blocks and the plurality of second blocks are paired in pairs; calculating a pair between the first block and the second block Sum of Difference; calculating a momentum ratio according to all sum differences and complex sums of weights between the first picture and the second picture; and determining the used ratio according to the momentum ratio A frame rate and decide whether to display a picture. The first block in pairs is the same size as the second block.

The display system comprises a block cutting module, a difference calculation module, a momentum ratio calculation module, and a picture modulation module. The block cutting module is configured to receive a first picture and a second picture, and is configured to divide the first picture and the second picture into a plurality of first blocks and a plurality of second according to a resolution. Block. The first picture and the second picture are a pair of consecutively played pictures, and the plurality of first blocks and the plurality of second blocks are paired in pairs. The sum and difference calculation module is configured to calculate a one-to-two pairwise difference between the first block and the second block. The momentum ratio calculation module calculates a momentum ratio based on all sum differences and a plurality of sum difference weights between the first picture and the second picture. The picture modulation module is configured to determine a frame rate used for display according to the momentum ratio and determine whether to display a picture. The first block in pairs is the same size as the second block.

Certain terms are used throughout the description and following claims to refer to particular elements. It should be understood by those of ordinary skill in the art that manufacturers may refer to the same elements by different nouns. The scope of this specification and the subsequent patent application do not use the difference of the names as the means for distinguishing the elements, but the differences in the functions of the elements as the basis for the distinction. The term "including" as used throughout the specification and subsequent claims is an open term and should be interpreted as "including but not limited to". In addition, the term "electrical connection" is used herein to include any direct and indirect electrical connection. Therefore, if a first device is electrically connected to a second device, it means that the first device can be directly connected to the second device or indirectly connected to the second device through other devices or connection means.

In order to solve the problem in the prior art that reducing the frame rate of the display screen causes flicker, the present invention discloses a method and related display system that can simultaneously reduce the power consumption of the display system without affecting the image quality. In the present invention, the two consecutive pictures received are individually cut into a plurality of image blocks of different sizes, and the sum difference between two consecutive pictures is calculated in units of image blocks, according to the calculation. And the difference value calculates a momentum ratio between two consecutive pictures, and determines whether to play the picture according to the momentum ratio and the frame rate of the playback picture, so that flickering may occur or the frame rate is too high. The screen stops playing to save power consumption without affecting the picture quality.

Please refer to FIG. 1 , which is a functional block diagram of a display system 100 according to the present invention. As shown in FIG. 1 , the display system 100 includes a block cutting module 110 , a difference calculation module 120 , a momentum ratio calculation module 130 , a picture modulation module 140 , and a buffer memory . 150.

The display system 100 receives two pictures Fn-1 and Fn, wherein the pictures Fn-1 and Fn are two pictures that are continuously played, and the picture Fn-1 is received by the display system 100 earlier than the picture Fn. The buffer memory 150 is used to temporarily store the picture Fn-1 received by the display system 100 until the picture Fn is received by the display system 100; and when the picture Fn is received by the display system 100, the buffer memory 150 is buffered. The screen Fn is also temporarily stored.

The block cutting module 110 divides the pictures Fn-1 and Fn into a plurality of first blocks and a plurality of second blocks according to a resolution, and the plurality of first blocks and the plurality of second blocks Two pairs in pairs. Referring to FIG. 2, the pictures Fn-1 and Fn shown in FIG. 1 are individually cut into a plurality of first blocks BLK1 (1, 1), BLK1 (1, 11), . . . according to a resolution. , BLK1 (1191, 1911) and a plurality of second blocks BLK2 (1, 1), BLK2 (1, 11), ..., BLK2 (1191, 1911). In Fig. 2, it is assumed that the pictures Fn-1 and Fn each contain 1200x1920 pixels, and when the resolution to be achieved is 120x192, the unit block size used for cutting is set to 10x10 pixels. In this way, in the second figure, the picture Fn-1 is cut into a total of 120x192 first blocks BLK1 (1, 1), BLK1 (1, 11), ..., BLK1 (1191, 1911), And the picture Fn is cut into a total of 192x120 second blocks BLK2 (1, 1), BLK2 (1, 11), ..., BLK2 (1191, 1911); so that the picture Fn-1 shown in Fig. 2 With Fn can be seen as two block matrices of size 120x192. Each of the above blocks includes 10×10 pixels, and the coordinate value shown in each block is the coordinate value of the pixel in the upper left corner of the block in the corresponding picture; for example, The coordinates of the top leftmost pixel of a block BLK1 (11, 1901) in the picture Fn-1 are (11, 1901). Please note that in other embodiments of the present invention, the number of pixels included in a single picture and the resolution to be set are not limited by the above-mentioned examples, and a plurality of blocks cut by a single picture are not required. As shown in Fig. 2, it is exactly the same, and only the principle that each picture is cut in the same manner can be followed; for example, in some other embodiments of the present invention, the first block BLK1 (1, 1) and the second The size and proportion of both blocks BLK2 (1, 1) must be the same, that is, the first block BLK1 (1, 1) and the first block BLK1 (1, 11) or The size and proportion of the second block BLK2 (1, 11) may be different, and the size and ratio of the first block BLK1 (1, 11) or the second block BLK2 (1, 11) must also be the same.

And the difference calculation module 120 calculates a Sum of Difference (SOD) between the first block and the second block generated by the block cutting module 110. For example, in FIG. 2, the difference calculation module 120 can calculate the first block BLK1 (1, between the first block BLK1 (1, 1) and the second block BLK2 (1, 1). 11) between the second block BLK2 (1, 11), ..., the first block BLK1 (1191, 1901) and the second block BLK2 (1191, 1901), the first block BLK1 (1191, 1911) A plurality of differences are formed between the second block BLK2 (1191, 1911), and the plurality of differences are added and divided by the total number of blocks in the picture Fn-1 or Fn (ie, 120x192). Produce a sum difference. It should be noted that, in an embodiment of the present invention, the difference between the paired first block BLK1 and the second block BLK2 may be a pixel difference value or a brightness difference value, wherein the brightness difference value may be According to the pixel difference, the conversion is obtained by the following formula (1):

Y=kr*R+kg*G+kb*B (1)

Y is the difference in brightness, and R, G, and B are the red, green, and blue pixel values in the pixel difference, and each of kr, kg, and kb is a fixed value. The pixel values and luminance value conversions shown in the formula (1) are well known to those skilled in the art, and therefore will not be described again. The pixel difference value may be a sum of pixel values between the pixels included in the first block BLK1 and all the pixels included in the second block BLK2 or a normalized pixel value difference, but The manner of calculating the pixel difference value in the present invention is not limited by the above-exemplified examples; similarly, the luminance difference value may be all the pixels included in the first block BLK1 and all the pictures included in the second block BLK2. The sum of the luminance value difference between the primes or the normalized luminance value difference may also be other forms of luminance value difference; thus, the sum difference generated may be a pixel and a difference or a luminance sum Difference. Specifically, the difference sum calculated by the difference calculation module 120 can be calculated according to the following equation:

The M and N systems respectively represent the length and width of the block matrix included in a single picture. In the case where the single picture includes 120×192 blocks, the single picture can be regarded as including a block matrix of 120×192 elements. And the block matrix has a length of 120 and a width of 192. ( m , n ) represents the coordinate value of a reference pixel on the first block BLK1 and a reference pixel on the second block BLK2; for example, the first block BLK1 (11, 1901) and the second region The block BLK2 (11, 1901) reference pixels are the pixels in the upper left corner of the two, that is, the pixels on the coordinates (11, 1901) on the picture Fn-1 or Fn, where the value of m is 11, and the value of n is 1901. FA _ SOD ( m , n ) is the sum difference, and as exemplified above, the sum difference may be a pixel and a difference or a brightness and a difference. F A _ P ( m , n ) represents that one of the first blocks BLK1 represents a difference, and when the difference is a pixel difference or a luminance difference, the representative difference is a pixel. Representing the difference or a brightness represents the difference. Similarly, FB_ P (m, n) represents the difference represents one based on a second block BLK2, may also be representative of a difference or a luminance pixel represents the difference. When the difference calculation module 120 processes all the blocks included in the pictures Fn-1 and Fn, each block will generate a sum value, that is, the above FA _ SOD ( m , n ).

In an embodiment of the present invention, the difference calculation module 120 further extracts a plurality of Most Significant Bits (MSBs) of each difference value to perform normalization to generate a plurality of regularities. And difference. For example, if the value of the pixel value is 1-255, the difference calculation module 120 sets the pixel value 36 (binary value is "00100100"), 95 (binary value is "01011111"), 172 (binary value is "10101100"), 232 (binary value is "11101000")) Take the first two highest powers first to form "00", "01", "10", "11", etc. The carry normalization and difference are also normalized to the normalization and difference of the original pixel values 36, 95, 172, 232 to 0-3 for subsequent processing by the momentum ratio calculation module 130.

The momentum ratio calculation module 130 calculates a momentum ratio MP according to all sum differences and complex sums of difference weights between the screens Fn-1 and Fn calculated by the difference calculation module 120; the physical meaning of the momentum ratio MP It is more specific to show the degree of difference between the pixel values or the brightness between the pictures Fn-1 and Fn, so when the momentum ratio MP is higher, it represents between the pictures Fn-1 and Fn. The difference is greater. In an embodiment of the present invention, the momentum ratio calculation module 130 multiplies the plurality of normalizations and differences generated by the difference calculation module 120 by different values and different weights (Weights) and Corresponding numbers are summed to generate a weighted sum and difference; the momentum ratio calculation module 130 finally extracts the weighted sum and the plurality of highest weights of the binary value of the difference to generate the required momentum ratio MP. Taking the normalization of the pixel values by the above-described and difference calculation module 120 as an example, the momentum ratio calculation module 130 may multiply the number of blocks normalized and having a difference of 0 by the normalization and the difference value 0. Multiply by a weight 1. Multiply the number of blocks normalized and the difference is 1 by normalization and the difference 1 and multiply by a weight 1. Multiply the number of blocks normalized and the difference of 2 by the normalized sum. The difference 2 is then multiplied by a weight of four, and the number of blocks normalized and having a difference of 3 is multiplied by the normalization and the difference 3 and multiplied by a weight of eight to produce four weighted sum differences. Then, the momentum ratio calculation module 130 adds the four weighted sum differences to generate a weighted sum and difference; the last momentum ratio calculation module 130 takes the weighted sum and the two highest powers before the difference. The element is generated to generate a momentum ratio MP, in other words, the momentum ratio MP may be "00", "01", "10", "11", that is, a decimal value of 0-3. More specifically, for example, the hypothesis and difference calculation module 120 finally calculates a block having 12x192 normalizations and a difference of 0, 36x192 normalizations, and a block having a difference of 1, in 120x192 blocks, 64x192 normalized and block with difference of 2, and 8x192 normalized and block with difference of 3, the weighted sum and difference are 0*(12*192)*1+1* (36*192)*2+2*(64*192)*4+3*(8*192)*8=148992; Next, since the 148992 is converted to binary, the first two highest powers are “10” Therefore, the momentum ratio calculation module 130 will obtain the value of the momentum ratio MP as "10".

The screen modulation module 140 determines one of the frame rates FR used in the current display screen Fn and determines whether or not to display the screen Fn based on the momentum ratio MP calculated by the momentum ratio calculation module 130. The picture modulation module 140 establishes a lookup table 145 as a basis for determining the frame rate FR and whether to play the picture Fn. Please refer to FIG. 3, which is a schematic diagram of a lookup table 145 built into the picture modulation module 140 shown in FIG. 1 according to an embodiment of the present invention, wherein each non-index column included in the lookup table 145 The bit number corresponds to a different value of the frame rate FR of the momentum ratio MP or is used to decide whether to play sixty consecutive pictures numbered from 1 to 60. As shown in FIG. 3, the index field used by the lookup table 145 is the momentum ratio MP calculated by the momentum ratio calculation module 130, and the different values of the momentum ratio MP correspond to different frame rates FR; In the third figure, when the value of the momentum ratio MP received by the screen modulation module 140 is "10", the value of the display reference map 145 is used to display the map used for the display screen. The frame rate FR is 100 Hz, and then according to the different drawing corresponding to the lookup table 145 The playback order of the faces determines whether or not to play the picture Fn. Please note that the non-index field filled with slashes in the lookup table 145 represents the non-playing picture Fn, and the non-index field not filled with slashes represents the play picture Fn.

As can be seen from Fig. 3, when the value of the momentum ratio MP is larger, the corresponding frame rate FR is also higher; conversely, when the value of the momentum ratio MP is smaller, the corresponding frame rate FR is also lower; Because of the lookup table 145 shown in FIG. 3, the picture clarity is taken as a priority. More deeply, the higher the value of the momentum ratio MP, that is, the greater the difference in the value of the pixel value or the brightness between the representative images Fn-1 and Fn, so a shorter motion picture is required for playing the picture Fn. Reaction Picture Response Time (MPRT), that is, the picture frame Fn cannot be displayed using a frame rate FR that is too low to prevent the occurrence of edge blur and the like to reduce the sharpness of the picture Fn; conversely, when the momentum ratio MP is At a lower level, even if a lower frame rate FR is used, no significant edge blurring is generated, so the lookup table 145 shown in FIG. 3 displays the picture at a lower frame rate FR, and further To achieve the purpose of saving power.

In addition, in the lookup table 145 shown in FIG. 3, when the value of the momentum ratio MP is low, the non-display screen Fn is also determined according to a certain rule and period, that is, the oblique line is filled in the third figure. Each non-index field; the setting of these non-display screens is the same as the above-mentioned adjustment for the frame rate FR, that is, the normal playback of the picture Fn is maintained at a higher momentum ratio MP and frame rate FR, and The lower momentum ratio MP and the frame rate FR are appropriately stopped to play the screen Fn for the purpose of saving power. For example, in Figure 3, the numbers are 1-12, 13-24, 25-36, 37-48, 49-60, etc. The display/non-display state of the face is controlled in the same mode, that is, the representative picture modulation module 140 controls whether to display the picture in a fixed mode of periodic control. However, the fixed mode of the cycle control is only one embodiment of the present invention. Other embodiments formed by modifying the screen display control mode shown in Fig. 3 should still be regarded as the scope of the present invention.

Please refer to FIG. 4 again, which is the same as FIG. 3, and is also a schematic diagram of the look-up table 145 according to another embodiment of the present invention; however, FIG. 4 shows the requirements set on the screen display control and FIG. The difference is shown. Since the momentum ratio MP is high, the screen content changes and the corresponding frame rate FR is large, so the naked eye is not easy to detect the flicker phenomenon; conversely, when the momentum ratio MP and the corresponding frame rate FR are small, the naked eye is easier. Feel the flicker. In the lookup table 145 shown in FIG. 4, the momentum ratio MP and the corresponding frame rate FR are stopped to be displayed in a certain period and rule to save power; otherwise, in order to reduce the momentum ratio as much as possible The flicker phenomenon when the MP is low to avoid affecting the display quality, so the setting of the lookup table 145 avoids stopping the display of a screen having a lower momentum ratio MP to prevent flicker.

The lookup table 145 shown in FIG. 3 and FIG. 4 is exemplified by a display system having a basic frame rate of 60 Hz. However, the setting of the lookup table 145 disclosed in the present invention can also be used for a higher basic frame rate. 120Hz display system. Please refer to FIG. 5, which is a schematic diagram of the lookup table 145 shown in FIG. 1 applied to a display system having a basic frame rate of 120 Hz. The setting principle of the lookup table 145 shown in FIG. 5 is the same as that shown in FIG. 3, and therefore no further description is provided here. However, since the lookup table 145 shown in FIG. 5 corresponds to a higher display rate than the third figure, in order to save power, the field for determining the non-display screen is also larger than that shown in FIG. In addition, in a preferred embodiment of the present invention, the display system 100 corresponding to FIG. 5 calculates the luminance difference value to obtain the required momentum ratio MP.

In addition to determining the frame rate FR and whether or not the screen Fn is displayed by the display system 100 shown in FIG. 1, in another embodiment of the present invention, an overdriving technique is applied to the display of the screen, Further improve the dynamic image response time of the screen display. Please refer to FIG. 6, which is a schematic diagram of a display system 200 in accordance with another embodiment of the present invention. As shown in FIG. 6, display system 200 includes an overdrive circuit 160 in addition to display system 100 shown in FIG. The overdrive circuit 160 is configured to receive the picture Fn and the picture Fn-1 temporarily stored by the buffer memory 150 to generate an overdrive picture FOD. The operation modes of the block cutting module 110, the difference calculation module 120, and the momentum ratio calculation module 130 are the same as those in the first embodiment, and the detailed description thereof will not be repeated here. The picture modulation module 140 receives the drive picture FOD in the display system 200 instead of the picture Fn shown in FIG. 1; the picture modulation module 140 is based on the momentum ratio calculated by the momentum ratio calculation module 130. The MP determines the frame rate FR used for playing the drive picture FOD and determines whether or not the drive picture FOD has been played, and the manner of determination is the same as that of the reference lookup table 145 described in FIGS. 3 to 5, so it is no longer here. More details.

Please refer to FIG. 7 , which is a flowchart of a method for reducing power consumption of a display system and avoiding affecting image quality according to an embodiment of the invention. As shown in FIG. 7, the method includes the following steps: Step 702: The first picture and the second picture are separately divided into a plurality of first blocks and a plurality of second blocks according to a resolution; step 704: Calculating a difference between the first block and the second block in two pairs; step 706: according to all the difference between the first picture and the second picture, and a plurality of differences The value weight calculates a momentum ratio; step 708: determines a frame rate to be used according to the momentum ratio and determines whether to display a screen.

The above steps are summarized in the description of FIGS. 1 to 6, and therefore will not be repeated here. However, other embodiments formed by adding the other limitations mentioned in the foregoing description to the flowchart disclosed in FIG. 7 or other embodiments resulting from the reasonable combination or arrangement of the above steps should still be It is considered to be the scope of the present invention.

The present invention discloses a method and related display system that can reduce the power consumption of the display system and avoid image quality. In the present invention, two consecutive pictures will calculate the sum difference between the two consecutive pictures according to the difference value of the pixel difference value or the brightness value and the like, and will correspond to different areas in the picture. The sum of the blocks and the difference are weighted according to the value to generate a momentum ratio to more specifically reflect the degree of difference of the two consecutive pictures. Finally, by setting the look-up table, different momentum ratios can be corresponding to different frame rate and screen display state under different requirements, so as to save power consumption and maintain image display quality.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100, 200. . . Display system

110. . . Block cutting module

120. . . And difference calculation module

130. . . Momentum ratio calculation module

140. . . Picture modulation module

145. . . Query list

150. . . Buffer memory

160. . . Overdrive circuit

702, 704, 706, 708. . . step

1 is a functional block diagram of a display system disclosed in the present invention.

FIG. 2 is a schematic diagram showing the cutting of the two pictures shown in FIG. 1 into a plurality of first blocks and a plurality of second blocks according to a resolution.

3, 4, and 5 are schematic diagrams of a query table built into the picture modulation module shown in FIG. 1 according to an embodiment of the present invention, wherein each of the non-indexes included in the lookup table The field corresponds to a different value of the frame rate of the momentum ratio or is used to decide whether to play a plurality of consecutive pictures.

FIG. 6 is a schematic diagram of a display system for playing a drive screen according to another embodiment of the present invention.

FIG. 7 is a flow chart of a method for reducing power consumption of a display system and avoiding affecting image quality according to an embodiment of the invention.

100. . . Display system

110. . . Block cutting module

120. . . And difference calculation module

130. . . Momentum ratio calculation module

140. . . Picture modulation module

145. . . Query list

150. . . Buffer memory

Claims (26)

A display driving method includes: dividing a first picture and a second picture according to a resolution into a plurality of first blocks and a plurality of second blocks, wherein the first picture and the second picture are a pair of consecutively played pictures, and the plurality of first blocks and the plurality of second blocks are paired in pairs; calculating between the two blocks in pairs between the first block and the second block a sum difference (Sum of Difference); calculating a momentum ratio according to all sum differences and a plurality of weight differences between the first picture and the second picture; and determining the momentum ratio according to the momentum ratio A frame rate is used to determine whether to display a picture; wherein the first block in the pair is the same size as the second block. The display driving method of claim 1, wherein the plurality of first blocks are different in size from each other, and the plurality of second blocks are different in size from each other. The display driving method of claim 1, wherein the plurality of first blocks are the same size as each other, and the plurality of second blocks are the same size as each other. The display driving method of claim 1, wherein calculating the difference between the two blocks in the pair of the first block and the second block comprises: calculating the two blocks in pairs of the first block a pixel and a difference between the second block and the second block; wherein the momentum ratio is calculated according to all sum differences and a plurality of sum difference weights between the first picture and the second picture: The pixel ratio and the difference between the first picture and the second picture and the plurality of pixels and difference weights are calculated, and the momentum ratio is calculated. The display driving method of claim 4, wherein calculating the two pixels and the pair of pixels and the difference between the first block and the second block comprises: calculating the pixel and the difference according to the following equation value: The first block and the second block each comprise a plurality of pixels arranged in a matrix and equal in number, the plurality of pixels included in the first block and the second block The plurality of pixels included in the pair are pairwise, and the M and N lines respectively represent the length and width of the matrix; wherein FA _ SOD ( m , n ) is the pixel and the difference, ( m , n ) Representing a coordinate value of a first reference pixel on the first block and a second reference pixel on the second block, F A _ P ( m , n ) is a representative picture of the first block The prime value, FB_ P ( m , n ) is a representative pixel value of one of the second blocks. The display driving method of claim 5, further comprising: extracting a plurality of most significant bits (Most Significant Bits) of the pixels and the difference values to generate a normalized pixel and a difference value. The display driving method of claim 4, wherein calculating the momentum ratio according to all the pixels and difference values between the first picture and the second picture and the plurality of pixels and difference weights comprises: Multiplying all the pixels and difference values between the first picture and the second picture by one of the plurality of pixels and the difference weight according to the difference in value between each pixel and the difference And a difference weight to generate a plurality of weighted pixels and a difference; and adding the plurality of weighted pixels and the difference, and dividing by the number of pixels included in the first picture or the second picture And generating the momentum ratio; wherein the plurality of pixels and the difference weight correspond to pixels and differences of different values. The display driving method of claim 1, further comprising: converting the plurality of pixel values of the plurality of pixels included in the plurality of first blocks and the plurality of second blocks into a plurality of brightness values Calculating the difference between the first block and the second block in two pairs, comprising: calculating one of two pairs between the first block and the second block a brightness and a difference; wherein calculating the momentum ratio according to all sum differences and a plurality of sum difference weights between the first picture and the second picture comprises: according to the first picture and the second picture The momentum ratio is calculated by all luminances and differences and a plurality of luminance and difference weights. The display driving method of claim 8, wherein calculating the brightness and difference between the pair of the first block and the second block comprises: calculating the brightness and the difference according to the following equation: The first block and the second block each comprise a plurality of pixels arranged in a matrix and equal in number, the plurality of pixels included in the first block and the second block The plurality of pixels included in the pair are pairwise, and the M and N lines respectively represent the length and width of the matrix; wherein FA _ SOD ( m , n ) is the brightness and difference, and ( m , n ) represents a first reference pixel on the first block and a coordinate value of a second reference pixel on the second block, F A _ P ( m , n ) representing a brightness value of one of the first blocks , FB_ P ( m , n ) represents one of the second blocks representing the brightness value. The display driving method of claim 9, further comprising: extracting the plurality of highest power bits of the brightness and the difference to generate a normalized pixel and a difference. The display driving method of claim 9, wherein calculating the momentum ratio according to all the brightness and difference values between the first picture and the second picture and the plurality of brightness and difference weights comprises: All the brightness and difference between the first picture and the second picture are multiplied by one of the plurality of brightness and difference weights according to the difference in value of each brightness and difference, Generating a plurality of weighted luminances and differences; and adding the plurality of weighted luminances and differences, and dividing by the number of pixels included in the first picture or the second picture to generate the momentum ratio; The plurality of luminances and difference weights correspond to luminances and differences of different values. The display driving method of claim 1, further comprising: establishing a lookup table, wherein the query table stores a frame rate corresponding to the momentum ratio and whether a display state of the display screen is displayed under the momentum ratio; and Determining, according to the momentum ratio, the current frame rate used for displaying the second picture and determining whether to display the second picture system includes: querying the lookup table by using the momentum ratio as an index to determine the frame rate and whether The second screen is displayed at the frame rate. The display driving method of claim 1, further comprising: performing an over-Driving process on the first picture and the second picture to generate an over-driving picture; wherein the used ratio is determined according to the momentum ratio The frame rate and determining whether to display the screen include: determining, based on the momentum ratio, a frame rate used to display the overdrive screen and determining whether to display the overdrive screen. A display system includes: a block cutting module configured to receive a first picture and a second picture, and to divide the first picture and the second picture into a plurality of first areas according to a resolution a block and a plurality of second blocks, wherein the first picture and the second picture are a pair of consecutively played pictures, and the plurality of first blocks and the plurality of second blocks are paired in pairs; And a difference calculation module, configured to calculate a pairwise difference between the first block and the second block; a momentum ratio calculation module, according to the first picture and the first a sum of the difference between the two pictures and a plurality of sum and difference weights to calculate a momentum ratio; and a picture modulation module for determining a frame rate used for display according to the momentum ratio and determining whether to display a picture; wherein the first block in the pair is the same size as the second block. The display system of claim 14, wherein the plurality of first blocks are different in size from each other, and the plurality of second blocks are different in size from each other. The display system of claim 14, wherein the plurality of first blocks are the same size as each other, and the plurality of second blocks are the same size as each other. The display system of claim 14, wherein the difference between the first block and the second block calculated by the difference calculation module is a pixel and a difference. a value; wherein the momentum ratio calculation module is configured to calculate the momentum ratio according to all the difference between the first picture and the second picture as the relationship between the first picture and the second picture The prime and the difference, and the complex number and the difference weight are based on a plurality of pixels and difference weights. The display system of claim 17, wherein the pixels and the difference are calculated according to the following equation: The first block and the second block each comprise a plurality of pixels arranged in a matrix and equal in number, the plurality of pixels included in the first block and the second block The plurality of pixels included in the pair are pairwise, and the M and N lines respectively represent the length and width of the matrix; wherein FA _ SOD ( m , n ) is the pixel and the difference, ( m , n ) Representing a coordinate value of a first reference pixel on the first block and a second reference pixel on the second block, F A _ P ( m , n ) is a representative picture of the first block The prime value, FB_ P ( m , n ) is a representative pixel value of one of the second blocks. The display system of claim 18, wherein the difference calculation module retrieves the plurality of highest power bits of the pixel and the difference to generate a normalized pixel and a difference. The display system of claim 17, wherein the momentum ratio calculation module is to compare all pixels and differences between the first picture and the second picture according to each pixel and the difference value. Multiplying the pixel and the difference weight by one of the plurality of pixels and the difference weight to generate a plurality of weighted pixels and a difference, and the momentum ratio calculation module also multiplies the plurality of weighted pixels and Adding the difference values and dividing by the number of pixels included in the first picture or the second picture to generate the momentum ratio; wherein the plurality of pixels and the difference weights correspond to pixel values of different values Difference. The display system of claim 14, wherein the block cutting module converts the plurality of pixel values of the plurality of pixels included in the plurality of first blocks and the plurality of second blocks into a plurality of brightness values; wherein the difference between the first block and the second block calculated by the difference calculation module is a brightness and a difference; wherein the momentum ratio The sum of the difference between the first picture and the second picture used by the calculation module to calculate the momentum ratio is all the brightness and difference between the first picture and the second picture, and The complex number and the difference weight are based on the plurality of luminances and difference weights. The display system of claim 21, wherein the difference calculation module calculates the brightness and difference according to the following equation: The first block and the second block each comprise a plurality of pixels arranged in a matrix and equal in number, the plurality of pixels included in the first block and the second block The plurality of pixels included in the pair are pairwise, and the M and N lines respectively represent the length and width of the matrix; wherein FA _ SOD ( m , n ) is the brightness and difference, and ( m , n ) represents a first reference pixel on the first block and a coordinate value of a second reference pixel on the second block, F A _ P ( m , n ) representing a brightness value of one of the first blocks , FB_ P ( m , n ) represents one of the second blocks representing the brightness value. The display system of claim 22, wherein the difference calculation module retrieves the plurality of highest weights of the brightness and difference to produce a normalized pixel and a difference. The display system of claim 21, wherein the momentum ratio calculation module is configured to compare all brightness and difference between the first picture and the second picture according to a difference in value between each brightness and difference. Multiplying one of the plurality of luminances and difference weights by a luminance and a difference weight to generate a plurality of weighted luminances and differences, the momentum ratio calculation module also adding the plurality of weighted luminances and differences, and Dividing the number of pixels included in the first picture or the second picture to generate the momentum ratio; wherein the plurality of brightness and difference weights correspond to different values of brightness and difference. The display system of claim 14, wherein the picture modulation module has a built-in lookup table, wherein the query table stores the plurality of status data of the momentum ratio at different frame rates to determine whether to display the picture; The picture modulation module queries the lookup table with the momentum ratio as an index to determine the frame rate and whether to display the second picture at the frame rate. The display system of claim 14, further comprising: an overdrive circuit for performing driving processing on the first picture and the second picture to generate an overdrive picture; wherein the picture modulation module is Based on the momentum ratio, it is determined whether one of the frame rates used for displaying the overdrive screen is displayed and whether or not the overdrive screen is displayed.